Vulcanizer



Allg- 9 I A: p. SLATKIN 2,292,485

VULCANIZER Filed May 29, 1941 I 48 44 v v INVENTIJR' 4 2- Fl A.D.SLATKIN FIG- 2 .-V 4 m r ATTORNEY.

Patented Aug. 11,

.- UNITED "STATES PATENT o Fw I V v1;:( fi1 v1 z irn I I 7 Alfred Daniel Slatkin, Toronto, Ontario, Canada Application May 29, 1941, Serial No. 395,876

7 1 Claim. (01. 18-18) My invention relates to improvements in vulcanizers and the object of the invention is to devise a simple, compact, cheap, eflicient and readily portable machine in which the pressure is readily applied, and evenly distributed over the surface of the patch or other article to be vulcanized, in which the device is readily adaptable for use on surfaces varying in configuration and which is also readily adaptable for not only vulcanizing patches but the mushrooms of valves to inner tubes and it consists essentially in the arrangement and construction of parts as hereafter described.

Figure 1 is'a perspective view of my vulcanizer.

Figure 2 is an enlarged longitudinal sectional view through the main parts of the vulcanizer as used in vulcanizing patches to tires and similar articles. g

Figure 3 is a transversesectional view through the parts shown in Figure 2.

Figure 4 is a similar view to Figure 2, showing the device adapted for'vulcanizing a valve mushroom to an inner tube.

are deep square threads so as to provide a maximum amount of leverage when the spindle is turned and therefore create a maximum pressure. An element casing I5 preferably oval in form is provided with a central internal boss l6 having a central orifice I1 and a cut out portion I8 extending through the wall of the casing at one end thereof. v

The casing I5 is provided with a bottom wall I9 fitting within the casing and resting on a pluralityof internal bosses 20, one only of which is shown, being secured thereto by screws 2|. The centre of the plate I9 is formed on its upper face into a shallow boss 22, the top of which abuts against the bottom of the boss I6 and is provided with a central orifice 23, the lower face of the plate being formed with a tapered recess 24, the taper of which corresponds to the taper of a mushroom valve base.

A fork member formed by arms and 26 and an upper connecting boss 21 is secured by screws 28 to the top of the casing I5 and on diametrically opposite sides of the orifice II. The

Figure 5 is an enlarged perspective detail of the combined pressure plate and heating element casing and looking at the under side.

Figure 6 is an enlarged sectional plan detail of the hinged joint between the pressure plate carrier and main frame.

v In the drawing like characters of reference indicate corresponding parts in each figure.

A foot plate I is secured by screws .I or other means to the top ofa work bench orother suitable support I. A main frame 2 somewhat oval in form having an open front forming opposing ends 3 and 4 extends from the plate I. The end 3 is formed with a forwardly extending jaw 5 through the arms 6 and I of which extends a hinge pin 8.

An arm 9 is swung upon the pin 8 between the jaw arms 6 and 1, its swinging movement be-.

ing limited by a blockor projection III (see I Fig. 6) which extends from oris secured to the arm 9 and engages the base of the jaw 5 when swung into a position parallel to the arms of the jaw. By this meansflthe arm 9 is held so as to be capable of swinging in one direction only on the pin 8 and is therefore correctly centred over the supporting pad 41 hereafter described when in the operative position.

The outer end of the arm 9 carries a vertical internally threaded sleeve II in which is screwed a pressure screw I2 having a hand wheel I3 at its upper end and a ball joint I4 at its lower end. The threads of the screw boss 2'I'is formed with a central recess 29, the

bined pressure and heating element formed by the casing I5, fork member 25, 26, 21, and plate I9 swings on the ball I4 so that the lower face of the plate I9 adjusts itself automatically to interval of time according to' the work required to be done;

I do not describe or illustrate the time clock indetail as it is of-ordinary standard construction and in itself forms no part of the invention but only as it is connected with the other parts of my device. A supplemental pressure plate 4| fits against the pressure plate I9 and is provided with a central boss 42 extending l2 and sleeve II through the orifice 23 so as to fit the same and The ball I4 is retained in the socket by a 40 is the setting de- I vice by which the time clock is adjusted to automatically open the circuit at any predetermined from which extends a threaded stem 43 which projects upwardl through the orifice II. A butterfly nut 44* is screwed onto the upper end of, the stem 43 against the washer 43* covering the orifice II.

The lower face of the plate 4| is formed to fit the configuration oi the tire which may be flat,

rounded or recessed in any of the various ways toform the traction surface. The end 4 of-the main frame 2 is formed into a horizontal 'plate Figure 4, the stem of passing through-the orifices 28 and l'I. Pressure then exerted and heat applied as before toeiiect the.

vulcanization of the parts.

If the rupture is in one of the side walls of the caslngsuchcasingmaybe.turnedsthatthe portion 44 having an open' ended slot. 4| at each end. 48 is a recessed plate secured by the bolts 41 t0 the portion 44 and into which is filled a soft rubber pad 48, the upper face of which is i curved transverselyto fit the interior of a tire casing as clearly indicated in Figure 3.

v The tire casing is indicated by the letter A. In performing the operation of vulcanizing a patch B over a ruptured tire, the tire, if the rupture is in the tread, is placed in the dotted line position shown in Figure 1 and in the full line position shown in Figures 2 and 3, resting on the pad 48. The hand wheel I; is then turned rotating the threaded spindle i2 so as to lower the pressure member and contact plate against the patch. The operation is continued until the I desired pressure is exerted.

The circuit throu h the time clock3'l and element 88 is then closed, the time clock being set in the usual manner to open the circuit after a predetermined lapse of time to effect the vulcanizing of the patch so that it becomes an integral' partof the tire.

The hand wheel is then turned in the opposite direction to that previously described to raise the element and contact plate clear of the tire to releasethesame. The'armicarryingtheseparts is then swung in the direction of arrow leaving the tire free to be raised from the supporting pad' and removed.

If itis desired to vulcanise a valve mushroom to the inner tube, the pad 48 is removed and a perfectly fiat pad 49 substituted'as inFlg; 4, the flattened inner tube 0 being laid thereon as indicated in this figure with the base oi. the mushroom cemented thereto according to the usual practice. The contact plate 4| is removed by unscrewing the nut 44*. The arm carrying the pressure plate is then swung over the tube and valve and then lowered so that the base of the mushroomfitsintotherecess flasshownin ruptured'part rests on the pad-48, the top.of'

which may be curved as'in Pig. 8or in the case of a' ruptured inner tube on a pad having a flat top as at 48 in Fig. 4..Theoval shape of the frame 2 allows for either side wall resting freely on the pad.

From this description it will be seen that I have devised a vulcanizing machine which may be used to repair a tire casing which has been ruptured either in the tread or either side wall .andwhich may readily be adapted for'vulcanizing a mushroom of a valve to the inner tube of a tire, which is simple, cheap and readily portable, and by which great pressure can manually be applied and a maximum heat provided and the heat controlled to suit the particular. job.

. AlthoughI have described my device as applied to tires it will, of course, be understood that it may beemployed 'i'or many other purposes where it is desired to vulcanize two parts together as in the repair of rubber blankets and canvas hose pipes, etc.

What I claim as my invention is: In a vulcanizer, a pad on which the article to be vulcanized rests, a vertical internally threaded sleeve supported above and in spaced relation with the pads threaded spindle engaging the thread of the'sleeve, means stem end of the .mental:plate through the orifice to project upwardly therefrom, a nut and washer on proiecting end and said washer bearing against the top or the casing around said orifice; a fork meanbersecuredtothecasingtopateachsideofthe orifice, and a universal connection between the fork member and spindle.-

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